package com.xujl.fastlib.utils;

import android.app.Activity;
import android.app.Application;
import android.content.Intent;
import android.os.Bundle;

import com.xujl.fastlib.base.BaseActivity;

import java.util.Stack;


public class AppManager implements Application.ActivityLifecycleCallbacks {


    private Stack<Activity> activityStack;

    private AppManager () {
    }

    /**
     * 单一实例
     */
    public static AppManager getAppManager () {
        return Holder.MANAGER;
    }


    /**
     * 添加Activity到堆栈
     */
    public void addActivity (Activity activity) {
        if (activityStack == null) {
            activityStack = new Stack<Activity>();
        }
        activityStack.add(activity);
    }

    /**
     * 获取当前Activity（堆栈中最后一个压入的）
     */
    public Activity currentActivity () {
        Activity activity = activityStack.lastElement();
        return activity;
    }

    /**
     * 结束当前Activity（堆栈中最后一个压入的）
     */
    public void finishActivity () {
        Activity activity = activityStack.lastElement();
        finishActivity(activity);
    }

    /**
     * 结束指定的Activity
     */
    public void finishActivity (Activity activity) {
        if (activity != null) {
            activity.finish();
            activity = null;
        }
    }

    /**
     * 结束指定类名的Activity
     */
    public void finishActivity (Class<?> cls) {
        Activity activityDel = null;
        for (Activity activity : activityStack) {
            if (activity.getClass().equals(cls)) {
                activityDel = activity;
            }
        }
        finishActivity(activityDel);
    }

    /**
     * 结束所有Activity
     */
    public void finishAllActivity () {
        for (int i = 0, size = activityStack.size(); i < size; i++) {
            if (null != activityStack.get(i)) {
                Activity activity = activityStack.get(i);
                if (!activity.isFinishing()) {
                    activity.finish();
                }
            }
        }
        // activityStack.clear();
    }


    /**
     * 移除
     *
     * @param activity
     */
    public void remove (Activity activity) {
        if (activityStack.size() > 0 && activity == activityStack.peek())
            activityStack.pop();
        else
            activityStack.remove(activity);
    }

    /**
     * 退出应用程序
     */
    public void appExit () {
        try {
            finishAllActivity();
            /*
             * Intent intent = new Intent(context, MainActivity.class); PendingIntent restartIntent = PendingIntent.getActivity( context, 0, intent, Intent.FLAG_ACTIVITY_NEW_TASK); //退出程序 AlarmManager
             * mgr = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE); mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 1000, restartIntent); // 1秒钟后重启应用
             */
            // 杀死该应用进程
            android.os.Process.killProcess(android.os.Process.myPid());
//            System.exit(0);
        } catch (Exception e) {

        }
    }

    @Override
    public void onActivityCreated (Activity activity, Bundle bundle) {
        addActivity(activity);
    }

    @Override
    public void onActivityStarted (Activity activity) {

    }

    @Override
    public void onActivityResumed (Activity activity) {

    }

    @Override
    public void onActivityPaused (Activity activity) {

    }

    @Override
    public void onActivityStopped (Activity activity) {

    }

    @Override
    public void onActivitySaveInstanceState (Activity activity, Bundle bundle) {

    }

    @Override
    public void onActivityDestroyed (Activity activity) {
        remove(activity);
    }

    /**
     * 关闭除指定act外的所有页面
     *
     * @param activityClass
     */
    public void keepFinish (Class<?>... activityClass) {
        for (Activity activity : activityStack) {
            boolean flag = false;
            for (Class<?> aClass : activityClass) {
                if (activity.getClass() == aClass) {
                    flag = true;
                }
            }
            if (!flag) {
                activity.finish();
            }
        }
    }

    public BaseActivity findActivity (Class<?> activityClass) {
        for (Activity activity : activityStack) {
            if (activity.getClass() == activityClass) {
                return (BaseActivity) activity;
            }
        }
        return null;
    }

    public void goSystemHome () {
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_MAIN);// "android.intent.action.MAIN"
        intent.addCategory(Intent.CATEGORY_HOME); //"android.intent.category.HOME"
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        ConfigManager.getInstance().getContext().startActivity(intent);
    }

    private static class Holder {
        private static final AppManager MANAGER = new AppManager();
    }
}
